Sunday
April 20, 2014

Homework Help: Physics

Posted by Kirsten on Tuesday, April 13, 2010 at 4:42am.

A 1000kg car is traveling along a level road at 20.00ms, when the brakes are applied long enough to do 50000 J of work.

1) what is the initial kinetic energy of the car?

2) if the car moved 100m while the brakes where applied, what was the average force exerted on the brakes.

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